Wrench



E. A. SHOCK WRENCH Filed ,Oct. 27. 1950 fiery 4. Sladfi' WITNES:

Patented Aug. 30, 1932 EMERY A. snoox, or COB/KING, (autumn Applicationfiled October 27,1930. s riai iraj aeiiaai f The object of this, mypresent invention, is the provision of a wrench which may be accu- Vrately adjusted to regulate the opening between the aws thereof, whichmay be adjusted to an exact precision for use on square, hexagon oroctagon nuts, which canbe easily and readily applied to a nut or pipe bysimply swinging the handles of the wrench toward or away from eachother, and which also embodies the desirable features of simplicity inconstruction, cheapness in manufacture and thorough efliciency in actualuse.

To the attainment of the foregoing the invention consists in theimprovement hereinafter described and definitely claimed.

In the drawing: 7 1 Figure 1 is a side elevation of the improve ment.

Figure 2 is a top plan View thereof.

Figure 3 is a sectional view approximately on the line 3-3 of Figure 2.

Figure 4 is a transverse sectional View approximately on the line 4-4 ofFigure 3.

Figure 5 is a similar sectional View approx imately on the line 55 ofFigure 3.

It will be noted as the description progresses that the improvement isin the nature of a combination tool, that is, the same is successfullyemployed as either a wrench or a pair of pliers. The stationary jaw 1 ofthe improvement may have its active face toothed or serrated and thesame is formed with a right angularly disposed shank 2 that terminatesin a curved handle 3. The shank 2, from a line with the active face ofthe jaw, is provided with an elongated substantially rectangular slot oropening 4 and with a transverse notch 5 that intersects the opening atthe inner portion thereof. The notch is designed V to receive therein aknurled nut 6 and this I i will be noted that the shank. is providedwith a longitudinal opening 8 that communicates with the notch 5 andwhich provides for the reception of the worm screw 6' therein.

The movable jaw of the vwrench is indicated by the numeral 9. The jaw,at the porthe handle 3.

tion thereof which underlies the shank '2'is cut angularly to provide ashoulder lO and from the inner wall of the shoulderthe said jaw isformed with a reduced extension '11 that is arranged in lapping relationto one r side of the shank 2. Preferably and as dis closed by thedrawing the jaw 1 is widened beyond the side of the shank 2 againstwhich the reduced portion 11 of the movable jaw 9 contacts. There ispassed through the'follower block 7 and the partll-l of the movable jaw9 a headed pivot 12 for the jaw 9. The t head of the pivot bridges theslot 4 and holds The jaw 9,ffrom its the block 7 in the slot. part 11"is formed witha reduced extension in the natureof a shank 13 which isalso inlapping relation with respect to the shank 2 and j it which shank13 merges into a handle 14 which is arched at an opposite curvature tothat of By reference, especially to Figure 5 of the drawing, it will benoted that the inner faceof the shank 11 may be brought into frictionalcontact with the periphery of the knurled nut 6 so that whenthe handle14 i is forced toward the handle 3 in the swinging of the handlestowardeach other, thiscontacting engagement between the shank andnutwill turn the nut to advance'the jaw 9 toward the jaw 1 for a minuteadjustment of the jaws with respect to the article gripped therebetweenand likewise the swinging of the handles 3 and 14 away from each otherwill cause the nut to be slightly turned in an opposite direction tobring the jaw 9 away from the jaw 1 and thus permit of the readyseparation of the jaws from the engaged articles. Themaj or adjustmentbetween the jaws, however, is accomplished when the handles 3 and 14 aresufiiciently spread to permit of the operator turning the nut 6. It isto be further noted that the nut v6 projects only" beyond one of thesides of the shank 2.

While in the showing of the drawing the active faces of the aws 9 and 1are toothed or serrated it is obvious that the said faces of the jawsmay be smooth and it is believed the foregoing description will fullyand clearly set forth the simplicity of the construction and theadvantages thereof to those skilled in the art so that further detaileddescription f i I r I 1,874,817

will not be required. Obviously I do not wish to be restricted to theprecise details 7 herein shown and described and, therefore, hold myselfentitled to make such changes 5 therefrom as fairly fall within thescope of what I claim. V p v Having described the invention, I claim: Awrench'ofthe characterdescribed, com-- v prising a stationary jaw having.a shank V 1 which merges into a handle and the said shank beingprovided with a rectangular slot that l? merges into a notch and with anopening that communicates with the notch, a block arranged in the slotand in contactwith the opposed longitudinal walls thereof, said blockhaving a Worm screw whichis received in the opening, a nut which isround in plan and peripherally knurled received in the t, notch andengaging the worm, a movable jaw having a reduced portion arrangedagainst one side of the shank, and a headed pivot v passing through theblock and said reduced portion and the head of the pivot holding the 7block in the slot, a shank formed at the reduced portion of the movableaw and merginginto a handle, and designed to frictionally V engage withthe knurled nut when-the mentioned handles areswung and forced towar v reach other.

' In testimony whereof I aflix my signature. I

EMERY A. SHOOK.

